M/501/2021

Amount

Cleaning and desilting of storm water drains and chambers along the perimeter wallsarea and various plant buildings by removing RCC precast slabs laid over drain, removal of vegetation from the side slopes/sides of drains, removing all debris, accumulated silt, cleaning of jali, again laying of precast slabs as etc., stacking rubbish at suitable location conveying upto a lead of 100 m, placing in heaps at the places shown as directed and in NFC from the drains of various depths as mentioned below.

(a) Depth upto 0.50 m

b) Depth from 0.51 m upto 1.00 m

(c) Depth from 1.01 m to 2.00 m

(D)BEYOND 2.00 m

Cleaning the sewer lines along with Inspection chambers, manholes from toilets to Septic tanks and outlet lines from septic tanks using sewer cleaning rods with all required accessories etc., as required including removing, all chokes, blockages etc., all as directed by Engineer-in-Charge.

Removal and cleaning of chokes occur in IWCs, EWCs, Urinals, Nahani traps, Gully traps, Wash Basins, G. I. water lines etc., including cleaning the lines thoroughly with required tools and plants as directed by Engineer-in-Charge

Cleaning the roof terraces of all RCC buildings including rain water gutters at all heights at various buildings at NFC, by sweeping and removing the dry leaves, twigs, waste papers and spalls, all debris etc., cutting and removal of tree branches of different sizes leaning over the buildings at all heights, cutting the branches in to pieces for easy transportation, desilting of rain water spouts, conveying and pouring water in to the rain water pipes, pouring and cleaning the chokes if any cleaning of chajjas including the spouts, collecting the dry leaves, twigs wastes etc., in a place shown by Engineer-in-Charge including cost of materials such as brooms, tools required for cleaning, gloves, mask and other tools as specified and as directed by Engineer-in-Charge.

Emptying the septic tank and blocked sewage chambers including pumping out all sewage sludge into mobile septic tank cleaning tankers and carrying out the sewage outside NFC for disposal and cleaning the septic tank walls and floor with water jet, clearing all the blockages in outlet lines including all required operators, workmen, equipment etc., complete as directed.

Lead charges for disposal of debris, dry leaves, twigs, wastes, silt etc. collected from roof terraces, drains etc. by mechanical transport for lead beyond 100 m and upto 2 Km including loading, unloading, stacking, levelling the materials etc. at dump yard complete as directed by Engineer-in-Charge.(Note: Voigs 20% shall be deducted from the corresponding stack/truck for measurement)

Earthwork excavation at all depths and soils in trenches for locating and exposing sewer lines including removing the damaged pipes, clearing away all clogged materials and tree roots from sewer lines, refilling the trenches after completion of work and making the area neat as directed by Engineer-in-Charge.

Special Cleaning and desilting of storm water drains whenever required especially during rainy season along the perimeter walls of NFC, NUFAP, NUOFP, SEP, DIG office area and various plant buildings by removing RCC precast slabs laid over drain, removal of vegetation from the side slopes/sides of drains, removing all debris, accumulated silt, cleaning of jali, again laying of precast slabs as etc., stacking rubbish at suitable location conveying upto a lead of 100 m, placing in heaps at the places shown as directed and in for the drains of all depths ( Team consist of three unskilled labours consider as one operation day)

P PASUPATHINATHAN